Facebook reportedly is in talks to buy a popular Israeli-based crowd-sourced mapping and traffic app.

The social network is moving to pay up to $1 billion to beef up its mobile effort, according to Israeli business site Calcalist (The site is in Hebrew). While negotiations are still ongoing between the two companies, Calcalist reports that both have already signed an initial agreement to move forward with the acquisition.

Facebook declined to comment on the report and Waze did not respond to a request for comment.

App users who also connect to Facebook can track friends who are driving to the same destination. "Coordinate everyone's arrival times when you pick up or meet up with friends," Waze noted on its website. "Now you're effortlessly in sync when you drive together."

Users also share information about local gas stations with the lowest prices, helping the Waze community navigate to the cheapest stations.

On April 5, Waze wrote in its company blog that executives were happy to have Facebook use the Waze logo during its Facebook Home release presentation.

"As we watched the event online, it was incredibly exciting to see our cute little Waze logo make an appearance," Waze noted. "Moreover, the Waze logo is also featured on the Facebook Home website. We are honored to receive this kind of recognition from Facebook."

For the past year, Facebook has been working to make inroads into the mobile world, which had been passing it by.